INDEX 



731 



Bichart, M. F. X., 504 

 Bilateral symmetry, 106, 188 

 Bile, 444 

 Bile duct of dogfish, 324 



of frog, 365 



of man, 481 



of pigeon, 408 



of rabbit, 442 

 Bilharzia, 127 

 Binary fission. See Fission 

 Biogenetic law, 715 

 Biological races, 156 

 Biology, definition of, i 

 Bipinnaria larva, 293 

 Biramous limb, 198 

 Bird lice, 152, 252 

 Birds, 253, 550, 551, 579, 610. See 

 Aves 



and reptiles, 416 

 Biston betularia, J 10 

 Bladder, air, 546, 591 



gall, of dogfish, 324 

 of frog, 365 

 of rabbit, 442 



salivary, of cockroach, 232 



urinary, 509 



of frog, 365, 379 

 of rabbit, 455, 669 

 Bladder-worm, 128, 129, 133 

 Blastocoele, 621 



of chick, 647 



of frog, 629 



of lancelet, 621 



of trochosphere, 179 

 Blastocyst, 666 

 Blastoderm, 647, 671 

 Blastodermic vesicle, 666 

 Blastomeres, 621 



of Amphibia, potentialities of, 



675 

 of frog, 629 



of Hydra, 100 



of lancelet, 621 

 Blastopore, 622 



of chick, 648, 649 



of frog, 632 



of lancelet, 622 



of mammals, 663 

 Blastostyles, 107 

 Blastula, 622 



of crayfish, 671 



of frog, 629 



of Hydra, 100 



of lancelet, 621 



of liver fluke, 125 



of Obelia, 107 



of starfish, earthworm, and swan 

 mussel, 670 



Blatta orienialis, 225, 229, 230, 239 

 Blattella germanica, 225, 239 

 Blepharoplast, 65 

 Blind spot, 466, 534 

 Blindworm, 550 

 Blood, 452, 524 



functions of the, 190 



islands, 659 



of crayfish, 208 



of dogfish, 332 



of earthworm, 166 



of frog, 376 



of lancelet, 306 



of leech, 182 



of man, 524 



of pigeon, 410 



of rabbit, 452 



of swan mussel, 279 

 See also Respiration 

 Blood-vascular system, 189. See 

 also Arteries, Vascular Sys- 

 tem, Veins 

 Blow-flies, 244, 25g 

 Bluebottles, 259 

 Blushing, 191 



Body cavities, 188. See also CceAom, 

 Haemocoele 



cavity, primary, 190 

 secondary, 190 



fluids, 506 



-wall, 565 



of earthworm, 160 

 of Hydra, 90 

 Bojanus, organs of, 278 

 Bone, 518 



cartilage and membrane, 519 



marrow, 518, 526 

 Bone or bones — 



alisphenoid, 403, 427, 429, 575. 

 582 



angular, 404, 585 



angulosplenial, 355, 586 



articular, 404, 585 



astragalus, 438, 556 



autopalatine, 582 



basihyal, 586 



basioccipital, 402, 426, 576 



basisphenoid, 403, 427, 575 



basitemporal, 403 



calcaneum, 438, 556 



calcar, 359 



cannon, 492 



capitate, 556 



carpal, 358, 405, 436 



central, 556 



ceratohyal, 586 



clavicle, 357, 404, 435 



cleithrum, 560 



